Clindamycin

Oral health effects

• Oral candidiasis (thrush)

  Broad-spectrum antibiotics suppress commensal bacteria, allowing Candida overgrowth in the mouth.

  Mechanism: Loss of competitive inhibition from normal flora.

  Clinical management: Watch for thrush, especially with repeated courses; treat with an antifungal; reinforce hygiene.

• Antibiotic-associated diarrhea / gut dysbiosis

  Clindamycin carries one of the highest risks of C. difficile–associated diarrhea/colitis among dental antibiotics.

  Clinical management: A probiotic (e.g., Saccharomyces boulardii) during the course may modestly lower the risk of antibiotic-associated diarrhea; the evidence is low certainty. Avoid probiotics in immunocompromised or severely ill patients. See the Gut Health page.

• Unpleasant or metallic taste (dysgeusia)

  An unpleasant or metallic taste has been reported after oral clindamycin. Frequency not stated on the label.

  Clinical management: Reassure the patient that it is temporary and resolves after therapy. Suggest sugar-free gum or lozenges, plus water, to mask the taste and avoid sugary sweets.